To be fair, calling for a great war against the hegemon BASICALLY means WW3, but I see what you're saying. They're seething at the mouth to justify pummeling a country to ashes
I read the article about strikes on Yemen in Polish media yesterday and entire article was just repeating the words "terrorism", "piracy" and "Iran-backed" ad nauseam, while not mentioning anything else, like the Ansar Allah stance for example. It was just that the evil Iran, for the sake of pure evil, employ the Houthis to indiscrimiately attack the good and completely innocent "international community" and US goes to the rescue of evertyhing that is good and right. They also straight up lie about Houthis being just a terror group rebels controlling small part of the country.
They really just want to go back to the times when they (US/ Europe) ruled everyone and dominated them thoroughly. Times have changed though and that bothers them. That's why a lot of these people are letting their freak flag fly.
TLDR: They want to do a genocide to get their groove back.